The Variation of Viscosity With Temperature and Pressure for Various Real Lubricants

[+] Author and Article Information
Scott Bair

George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332

J. Tribol 123(2), 433-436 (Jun 27, 2000) (4 pages) doi:10.1115/1.1308024 History: Received February 07, 2000; Revised June 27, 2000
Copyright © 2001 by ASME
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Bridgman,  P. W., 1949, “Viscosities to 30,000 kg/cm2 , Especially Certain Liquids,” Proc. Am. Acad. Arts Sci., 77, pp. 117–128.
Bair,  S., 1993, “A Note on the Use of Roelands Equation to Describe Viscosity for EHD Hertzian Zone Calculations,” ASME J. Tribol., 115, No. 2, p. 334.
Bair, S., 1999, “The Pressure-Viscosity Coefficient at Hertz Pressure and Its Relation to Concentrated Contact Traction,” Proc. 26th Leeds-Lyon Symposium on Tribology, Rowson, et al., eds., Elsevier, Amsterdam.
Bondi, A., 1968, Physical Properties of Molecular Crystals, Liquids and Glasses, Wiley, New York, pp. 350–358.
Roelands, C., 1966, “Correlational Aspects of the Viscosity-Temperature-Pressure Relationship of Lubricating Oils,” University Microfilms, Ann Arbor, MI.
Harrison, G., 1976, The Dynamic Properties of Supercooled Liquids, Academic Press, London, p. 28.
Conry, T. F., Johnson, K. L., and Owen, S., 1980, “Viscosity in the Thermal Regime of EHD Traction,” Thermal Effects in Tribology, Proc. 6th Leeds-Lyon Symposium on Tribology, Dowson, D., Taylor, C. M., Godet, M. and Berthe, D., eds., Mech. Engr. Pub. Ltd., London, pp. 219–227.
Wang,  S., Cusano,  C., and Conry,  T. F., 1991, “Thermal Analysis of Elastohydrodynamic Lubrication of Line Contacts Using the Ree-Eyring Fluid Model,” ASME J. Tribol., 132, 2, pp. 232–244.
Johnson,  K. L., and Greenwood,  J. A., 1980, “Thermal Analysis of an Eyring Fluid in Elastohydrodynamic Traction,” Wear, 61, p. 367.
Bair,  S., 1992, “An Experimental Verification of the Significance of the Reciprocal Asymptotic Isoviscous Pressure,” ASLE Tribol. Trans., 36, No. 2, pp. 154–155.
Bair, S., 1999, “Pressure-Viscosity Behavior of Lubricants to 1.4 GPa and Its Relation to EHD Traction,” STLE paper 99-TC-9, p. 5.
Yasutomi,  S., Bair,  S., and Winer,  W., 1984, “An Application of a Free Volume Model to Lubricant Rheology,” Trans. ASME, J. Tribol., 106, No. 2, pp. 291–303.
Bair, S., 1990, “High Shear Stress Rheology of Liquid Lubricants,” Ph.D. thesis, Georgia Institute of Technology, pp. 30–32.
Sharma,  S. K., Rosado,  L., Hoglund,  E., and Hamrock,  B. J., 1995, “Rheology of Perfluoropolyalkylether Fluids in Elastohydrodynamic Lubrication,” STLE Tribol. Trans., 38, No. 4, p. 772.


Grahic Jump Location
Viscosity and temperature-viscosity coefficients for LVI 260. At 90°C, β̄ is derived from the viscosity measurements shown and βR is from Eq. (1) and the data of 89.
Grahic Jump Location
The pressure-viscosity behavior of Mercon ATF
Grahic Jump Location
Pressure-viscosity isotherms for a Jet II lubricant
Grahic Jump Location
Pressure-viscosity behavior of a fluorinated oil by two laboratories



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